36
10.1.2 Command not confirmed
If a receiver does not confirm a command (at least one when
more than one have been taught), the device LED is illuminated
in red when the transmission is complete. The error will then be
found with the receiver:
• Receiver not accessible
• Receiver cannot execute command (load failure, mecha-
nical blockage, etc.)
• Defective receiver
In addition to the feedback message on the device LED, the
feedback message on the device display also enables a more
exact analysis of the error that occurred.
10.2 Error messages on the device display
There are two types of error messages:
Communication error
Actuator could not execute the command
If a communication error occurs, the message "CO-ER" and
the antenna symbol appear on the display. The transmit LED is
illuminated in red for a short period!
If the receiver confirms an incoming radio telegram, but the com-
mand cannot be executed because of an error on the actuator
side, "FAIL" appears on the remote control display (Transmit LED
is illuminated in green).
If the receiver confirms the receipt of the radio command but
cannot execute it (because a block is set, etc.) and indicates this
on the remote control, "NAK" is shown on the display.
For a scene call, a communication error with a participant can be
indicated with the message "CO-ER" (+ red transmit LED). If the
command cannot be executed by at least one participant even
through the telegram has been received, "FAIL" is shown on the
